
Valve Classics - C-1
2-Channel Tube Compressor

Overview
The new C-1 compressor maintains its position as the most flexible, polished sounding high end compressor on the market today. Now featuring a spectacular raven blue 6mm CNC milled aluminium front panel, General Electric US military specification valves, high retention gold plated ceramic valve bases and circular back-lit VU meters, the new C-1 is even fatter sounding and more rugged than its legendary predecessor.
All controls are continuously variable (unlike some other units with switched parameters) and high quality onboard mic preamps allow direct-to-tape recording of microphone sources. Stereo front panel instrument inputs mean a keyboard or guitar can feed straight into the C-1 and down to tape with a minimum of fuss. Whether the C-1 is tracking vocals and instruments or adding roundness and warmth to a complete mix, it will become an indispensable part of your signal path within hours.
The C-1 features a low noise solid state preamp followed by two valve stages per channel. The valves are General Electric ECC83/12AX7A types, run from a stabilised 250v DC power supply. The first valve stage acts as a voltage amplifier, with the second stage forming part of the gain control element. The gain control is performed by our own unique transconductance stage which avoids the use of VCAs - thus improving transparency and minimising distortion, which is virtually constant at 0.05% over the full bandwidth. The frequency response of the C-1 is virtually flat between 20Hz and 40kHz, and measured between -3dB points, the C-1's bandwidth is a staggering 5Hz to 70kHz!

Main Features
- 2 channels of soft knee, variable ratio compression
- Balanced mic and line level inputs
- Balanced line outputs, switchable for -10dB or +4dB operation
- Unbalanced jack I/O connections
- Stereo front panel instrument inputs with gain control and sensitivity switch (for guitar or keyboards etc.)
- Sidechain insert points for frequency conscious compression
- 48v phantom power
- 90Hz high pass filter switch (12dB / octave). Applies to all inputs
- Continuously variable Input Gain, Threshold, Attack / Release times, Compression Ratio and Gain Make Up
- Program dependent compression characteristic- attack and release times automatically adjust in response to program material
- ‘Stereo Link?mode - gangs Threshold, Attack, Release and Ratio controls for processing stereo signal sources
- Back-lit circular VU meters allow monitoring of either output level or gain reduction
- Bypass switch with LED
- Frequency response 20Hz to 40kHz +0 / -1dB

Specifications:
| TL Audio Valve Classics C-1 : Specifications | |
|---|---|
| Mic Input: | |
| Impedance: | > 10Kohm |
| Gain range: | +16 to +60dB |
| Input noise (EIN): | -126 dBu (22Hz-22kHz) |
| Max input level: | +10dBu |
| Balanced XLR connector | |
| Line Input: (Balanced) | |
| Impedance: | > 5Kohm |
| Gain range: | -10dB to +35dB |
| Max input level: | +30dBu |
| XLR connector | |
| Line Input: (Unbalanced) | |
| Impedance: | > 5Kohm |
| Gain range: | -10dB to +35dB |
| Max input level: | +24dBu |
| Jack connector | |
| Auxiliary input: | |
| Connection: | Two unbalanced jack connectors for stereo operation, or Input A may be used to drive both channels. |
| Max input level: | +10dBu |
| Switchable sensitivity for guitar or keyboards | |
| Output: | |
| Balanced output impedance: | < 10ohm |
| Max level: | +22dBu into 600ohm |
| Unbalanced output impedance: | 47ohm |
| Max level: | +20dBu into 10Kohm |
| Sidechain insert point: | |
| Connection: | stereo jack, tip=send, ring=return |
| Nominal level: | -2dBu |
| Output impedance: | 47ohm |
| Return input impedance: | 10Kohm |
| Compressor Functions (all continuously variable): | |
| Threshold: | -20dBu to +20dBu |
| Attack: | 0.5mS to 50mS |
| Release: | 40mS to 4S |
| Ratio: | 1:1.5 to 1:30 |
| Gain Make Up: | 0dB to +20dB |
| Frequency response: | 20Hz to 40kHz +0 / -1dB |
| Distortion: | 0.05% (10Hz-40kHz) |
| Dynamic Range: | 100dB |
| Physical: | |
| Power supply: | 110-120v or 220-240v AC |
| Power consumption: | 30VA typical |
| Dimensions: | 483 x 205 x 88mm (19" 2U) |
| Weight: | 5kg |
| Shipping Weight: | 6kg |
| Optional Extras: | There are no options for this product. |











